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<li class="navelem"><b>Sifteo</b></li><li class="navelem"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a></li>  </ul>
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<a href="#pub-methods">Public Member Functions</a> &#124;
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<p>A BG1 tile mask. In other words, this is a 16x16-bit two-dimensional vector.  
 <a href="struct_sifteo_1_1_b_g1_mask.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="bg1_8h_source.html">sifteo/video/bg1.h</a>&gt;</code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a07de976f0c00e150454fb36ac2214075"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a07de976f0c00e150454fb36ac2214075"></a>
void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a07de976f0c00e150454fb36ac2214075">clear</a> ()</td></tr>
<tr class="memdesc:a07de976f0c00e150454fb36ac2214075"><td class="mdescLeft">&#160;</td><td class="mdescRight">Erase a TileMask, setting all bits to zero. <br/></td></tr>
<tr class="separator:a07de976f0c00e150454fb36ac2214075"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3fcb59660c0907eb356ebc93b9e8156f"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a3fcb59660c0907eb356ebc93b9e8156f">fill</a> (<a class="el" href="group__math.html#ga2e4fcb4037bc16967e23c20126d25396">UInt2</a> topLeft, <a class="el" href="group__math.html#ga2e4fcb4037bc16967e23c20126d25396">UInt2</a> size)</td></tr>
<tr class="memdesc:a3fcb59660c0907eb356ebc93b9e8156f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Mark a rectangular region of the bitmap.  <a href="#a3fcb59660c0907eb356ebc93b9e8156f">More...</a><br/></td></tr>
<tr class="separator:a3fcb59660c0907eb356ebc93b9e8156f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a778bfbb03027dd9c650af6a3ad48a50b"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a778bfbb03027dd9c650af6a3ad48a50b"></a>
<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a778bfbb03027dd9c650af6a3ad48a50b">operator&amp;</a> (<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a> other) const </td></tr>
<tr class="memdesc:a778bfbb03027dd9c650af6a3ad48a50b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Bitwise AND with another mask. <br/></td></tr>
<tr class="separator:a778bfbb03027dd9c650af6a3ad48a50b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a993e1e8eddf7b1725e4b3a34164215da"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a993e1e8eddf7b1725e4b3a34164215da"></a>
<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a993e1e8eddf7b1725e4b3a34164215da">operator&amp;=</a> (<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a> other)</td></tr>
<tr class="memdesc:a993e1e8eddf7b1725e4b3a34164215da"><td class="mdescLeft">&#160;</td><td class="mdescRight">Bitwise AND with another mask. <br/></td></tr>
<tr class="separator:a993e1e8eddf7b1725e4b3a34164215da"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a52c9b388307876b8f148e057c3386653"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a52c9b388307876b8f148e057c3386653"></a>
<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a52c9b388307876b8f148e057c3386653">operator^</a> (<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a> other) const </td></tr>
<tr class="memdesc:a52c9b388307876b8f148e057c3386653"><td class="mdescLeft">&#160;</td><td class="mdescRight">Bitwise XOR with another mask. <br/></td></tr>
<tr class="separator:a52c9b388307876b8f148e057c3386653"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a25aa12638a9243a7c62d3b75cfeb511f"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a25aa12638a9243a7c62d3b75cfeb511f"></a>
<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a25aa12638a9243a7c62d3b75cfeb511f">operator^=</a> (<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a> other)</td></tr>
<tr class="memdesc:a25aa12638a9243a7c62d3b75cfeb511f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Bitwise XOR with another mask. <br/></td></tr>
<tr class="separator:a25aa12638a9243a7c62d3b75cfeb511f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a610959c1ed9434767b5f319d02880fc6"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a610959c1ed9434767b5f319d02880fc6"></a>
<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a610959c1ed9434767b5f319d02880fc6">operator|</a> (<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a> other) const </td></tr>
<tr class="memdesc:a610959c1ed9434767b5f319d02880fc6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Bitwise OR with another mask. <br/></td></tr>
<tr class="separator:a610959c1ed9434767b5f319d02880fc6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2113c1356e0cf3bbb467cbbad8ea25fc"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a2113c1356e0cf3bbb467cbbad8ea25fc"></a>
<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a2113c1356e0cf3bbb467cbbad8ea25fc">operator|=</a> (<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a> other)</td></tr>
<tr class="memdesc:a2113c1356e0cf3bbb467cbbad8ea25fc"><td class="mdescLeft">&#160;</td><td class="mdescRight">Bitwise OR with another mask. <br/></td></tr>
<tr class="separator:a2113c1356e0cf3bbb467cbbad8ea25fc"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7485607586cda96e1b80bec956ca410e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a7485607586cda96e1b80bec956ca410e"></a>
<a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a7485607586cda96e1b80bec956ca410e">operator~</a> () const </td></tr>
<tr class="memdesc:a7485607586cda96e1b80bec956ca410e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Bitwise complement. <br/></td></tr>
<tr class="separator:a7485607586cda96e1b80bec956ca410e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a0f331fe3186529e834af6601818f723e"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a0f331fe3186529e834af6601818f723e">plot</a> (unsigned x, unsigned y)</td></tr>
<tr class="memdesc:a0f331fe3186529e834af6601818f723e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Mark one tile in the bitmap, given as (x,y) coordinates.  <a href="#a0f331fe3186529e834af6601818f723e">More...</a><br/></td></tr>
<tr class="separator:a0f331fe3186529e834af6601818f723e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a042d7107de466ac06c05ce72cbd98bcc"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a042d7107de466ac06c05ce72cbd98bcc">plot</a> (<a class="el" href="group__math.html#ga2e4fcb4037bc16967e23c20126d25396">UInt2</a> pos)</td></tr>
<tr class="memdesc:a042d7107de466ac06c05ce72cbd98bcc"><td class="mdescLeft">&#160;</td><td class="mdescRight">Mark one tile in the bitmap, given as a vector.  <a href="#a042d7107de466ac06c05ce72cbd98bcc">More...</a><br/></td></tr>
<tr class="separator:a042d7107de466ac06c05ce72cbd98bcc"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab97ce40fed646524729aca0c602413cd"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ab97ce40fed646524729aca0c602413cd"></a>
uint16_t *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#ab97ce40fed646524729aca0c602413cd">rows</a> ()</td></tr>
<tr class="memdesc:ab97ce40fed646524729aca0c602413cd"><td class="mdescLeft">&#160;</td><td class="mdescRight">Get a pointer to the rows in this mask, as 16-bit integers. <br/></td></tr>
<tr class="separator:ab97ce40fed646524729aca0c602413cd"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr class="memitem:a61de7de1ea11bb2259a2f0342dd6c951"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a61de7de1ea11bb2259a2f0342dd6c951"></a>
static <a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a61de7de1ea11bb2259a2f0342dd6c951">empty</a> ()</td></tr>
<tr class="memdesc:a61de7de1ea11bb2259a2f0342dd6c951"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create an empty mask. All bits are zero. <br/></td></tr>
<tr class="separator:a61de7de1ea11bb2259a2f0342dd6c951"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8fbfd70038517697b6e01a8a9cdc7f76"><td class="memItemLeft" align="right" valign="top">static <a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a8fbfd70038517697b6e01a8a9cdc7f76">filled</a> (<a class="el" href="group__math.html#ga2e4fcb4037bc16967e23c20126d25396">UInt2</a> topLeft, <a class="el" href="group__math.html#ga2e4fcb4037bc16967e23c20126d25396">UInt2</a> size)</td></tr>
<tr class="memdesc:a8fbfd70038517697b6e01a8a9cdc7f76"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create a mask with a filled rectangle it.  <a href="#a8fbfd70038517697b6e01a8a9cdc7f76">More...</a><br/></td></tr>
<tr class="separator:a8fbfd70038517697b6e01a8a9cdc7f76"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>A BG1 tile mask. In other words, this is a 16x16-bit two-dimensional vector. </p>
<p>It is optimized for compile-time arithmetic, so that it's easy and efficient to build up static masks which correspond to a particular screen layout or asset layout. But these vectors can also be used to easily implement some fairly complex logic at runtime. They support boolean operations, which can be used for geometric union, intersection, and subtraction operations. </p>
</div><h2 class="groupheader">Member Function Documentation</h2>
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          <td class="memname">void Sifteo::BG1Mask::fill </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="group__math.html#ga2e4fcb4037bc16967e23c20126d25396">UInt2</a>&#160;</td>
          <td class="paramname"><em>topLeft</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="group__math.html#ga2e4fcb4037bc16967e23c20126d25396">UInt2</a>&#160;</td>
          <td class="paramname"><em>size</em>&#160;</td>
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          <td></td>
          <td>)</td>
          <td></td><td></td>
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<p>Mark a rectangular region of the bitmap. </p>
<p>All coordinates must be in range. This function performs no clipping. </p>

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          <td class="memname">static <a class="el" href="struct_sifteo_1_1_b_g1_mask.html">BG1Mask</a> Sifteo::BG1Mask::filled </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="group__math.html#ga2e4fcb4037bc16967e23c20126d25396">UInt2</a>&#160;</td>
          <td class="paramname"><em>topLeft</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="group__math.html#ga2e4fcb4037bc16967e23c20126d25396">UInt2</a>&#160;</td>
          <td class="paramname"><em>size</em>&#160;</td>
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          <td>)</td>
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<p>Create a mask with a filled rectangle it. </p>
<p>This should be used only with values that are constant at compile-time. For dynamic masks, it is significantly better to plot the rectangle dynamically using <a class="el" href="struct_sifteo_1_1_b_g1_mask.html#a3fcb59660c0907eb356ebc93b9e8156f" title="Mark a rectangular region of the bitmap.">fill()</a>.</p>
<p>All coordinates must be in range. This function performs no clipping. </p>

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          <td class="memname">void Sifteo::BG1Mask::plot </td>
          <td>(</td>
          <td class="paramtype">unsigned&#160;</td>
          <td class="paramname"><em>x</em>, </td>
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          <td class="paramtype">unsigned&#160;</td>
          <td class="paramname"><em>y</em>&#160;</td>
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<p>Mark one tile in the bitmap, given as (x,y) coordinates. </p>
<p>All coordinates must be in range. This function performs no clipping. </p>

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          <td class="memname">void Sifteo::BG1Mask::plot </td>
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          <td class="paramtype"><a class="el" href="group__math.html#ga2e4fcb4037bc16967e23c20126d25396">UInt2</a>&#160;</td>
          <td class="paramname"><em>pos</em></td><td>)</td>
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<p>Mark one tile in the bitmap, given as a vector. </p>
<p>All coordinates must be in range. This function performs no clipping. </p>

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<hr/>The documentation for this struct was generated from the following file:<ul>
<li><a class="el" href="bg1_8h_source.html">bg1.h</a></li>
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